+Open data
-Basic information
Entry | Database: PDB / ID: 6tnm | ||||||
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Title | E. coli aerobic trifunctional enzyme subunit-alpha | ||||||
Components | Fatty acid oxidation complex subunit alphaBeta oxidation | ||||||
Keywords | OXIDOREDUCTASE / fatty acid oxidation / lipid metabolism / hydratase / dehydrogenase / trifunctional enzyme / beta oxidation | ||||||
Function / homology | Function and homology information fatty acid beta-oxidation multienzyme complex / 3-hydroxybutyryl-CoA epimerase / 3-hydroxybutyryl-CoA epimerase activity / Delta3-Delta2-enoyl-CoA isomerase / delta(3)-delta(2)-enoyl-CoA isomerase activity / long-chain-3-hydroxyacyl-CoA dehydrogenase activity / 3-hydroxyacyl-CoA dehydrogenase / enoyl-CoA hydratase / 3-hydroxyacyl-CoA dehydrogenase activity / enoyl-CoA hydratase activity ...fatty acid beta-oxidation multienzyme complex / 3-hydroxybutyryl-CoA epimerase / 3-hydroxybutyryl-CoA epimerase activity / Delta3-Delta2-enoyl-CoA isomerase / delta(3)-delta(2)-enoyl-CoA isomerase activity / long-chain-3-hydroxyacyl-CoA dehydrogenase activity / 3-hydroxyacyl-CoA dehydrogenase / enoyl-CoA hydratase / 3-hydroxyacyl-CoA dehydrogenase activity / enoyl-CoA hydratase activity / fatty acid beta-oxidation / NAD+ binding Similarity search - Function | ||||||
Biological species | Escherichia coli (E. coli) | ||||||
Method | X-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.95 Å | ||||||
Authors | Sah-Teli, S.K. / Hynonen, M.J. / Wierenga, R.K. / Venkatesan, R. | ||||||
Funding support | Finland, 1items
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Citation | Journal: J.Struct.Biol. / Year: 2020 Title: Insights into the stability and substrate specificity of the E. coli aerobic beta-oxidation trifunctional enzyme complex. Authors: Sah-Teli, S.K. / Hynonen, M.J. / Sulu, R. / Dalwani, S. / Schmitz, W. / Wierenga, R.K. / Venkatesan, R. #1: Journal: Biochem J / Year: 2019 Title: Complementary substrate specificity and distinct quaternary assembly of the aerobic and anaerobic β-oxidation trifunctional enzyme complexes. Authors: Shiv K Sah-Teli / Mikko J Hynönen / Werner Schmitz / James A Geraets / Jani Seitsonen / Jan Skov Pedersen / Sarah J Butcher / Rik K Wierenga / Rajaram Venkatesan / Abstract: The trifunctional enzyme (TFE) catalyzes the last three steps of the fatty acid β-oxidation cycle. Two TFEs are present in , EcTFE and anEcTFE. EcTFE is expressed only under aerobic conditions, ...The trifunctional enzyme (TFE) catalyzes the last three steps of the fatty acid β-oxidation cycle. Two TFEs are present in , EcTFE and anEcTFE. EcTFE is expressed only under aerobic conditions, whereas anEcTFE is expressed also under anaerobic conditions, with nitrate or fumarate as the ultimate electron acceptor. The anEcTFE subunits have higher sequence identity with the human mitochondrial TFE (HsTFE) than with the soluble EcTFE. Like HsTFE, here it is found that anEcTFE is a membrane-bound complex. Systematic enzyme kinetic studies show that anEcTFE has a preference for medium- and long-chain enoyl-CoAs, similar to HsTFE, whereas EcTFE prefers short chain enoyl-CoA substrates. The biophysical characterization of anEcTFE and EcTFE shows that EcTFE is heterotetrameric, whereas anEcTFE is purified as a complex of two heterotetrameric units, like HsTFE. The tetrameric assembly of anEcTFE resembles the HsTFE tetramer, although the arrangement of the two anEcTFE tetramers in the octamer is different from the HsTFE octamer. These studies demonstrate that EcTFE and anEcTFE have complementary substrate specificities, allowing for complete degradation of long-chain enoyl-CoAs under aerobic conditions. The new data agree with the notion that anEcTFE and HsTFE are evolutionary closely related, whereas EcTFE belongs to a separate subfamily. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 6tnm.cif.gz | 351 KB | Display | PDBx/mmCIF format |
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PDB format | pdb6tnm.ent.gz | 238.4 KB | Display | PDB format |
PDBx/mmJSON format | 6tnm.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/tn/6tnm ftp://data.pdbj.org/pub/pdb/validation_reports/tn/6tnm | HTTPS FTP |
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-Related structure data
Related structure data | 1wdkS S: Starting model for refinement |
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Similar structure data | |
Other databases |
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-Links
-Assembly
Deposited unit |
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1 |
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Unit cell |
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-Components
#1: Protein | Mass: 81308.469 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Escherichia coli (strain K12) (bacteria) Gene: fadB, oldB, b3846, JW3822 / Variant: MG1655 / Plasmid: pETDuet-1 / Production host: Escherichia coli BL21(DE3) (bacteria) References: UniProt: P21177, enoyl-CoA hydratase, 3-hydroxybutyryl-CoA epimerase, Delta3-Delta2-enoyl-CoA isomerase, 3-hydroxyacyl-CoA dehydrogenase | ||||
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#2: Chemical | ChemComp-GOL / | ||||
#3: Chemical | ChemComp-ATP / | ||||
#4: Chemical | ChemComp-NO3 / #5: Water | ChemComp-HOH / | Has ligand of interest | Y | |
-Experimental details
-Experiment
Experiment | Method: X-RAY DIFFRACTION / Number of used crystals: 1 |
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-Sample preparation
Crystal | Density Matthews: 3.36 Å3/Da / Density % sol: 63 % / Description: rod shape, long, branched, cluster |
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Crystal grow | Temperature: 277.15 K / Method: vapor diffusion, sitting drop / pH: 7.5 Details: 100 mM Bis-Tris propane, pH 7.5, 25% w/v PEG 3550, 367 mM KNO3 and 25 mM ATP PH range: 7.2-7.6 / Temp details: cold room |
-Data collection
Diffraction | Mean temperature: 100 K / Ambient temp details: frozen in liquid nitrogen / Serial crystal experiment: N |
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Diffraction source | Source: SYNCHROTRON / Site: Diamond / Beamline: I04 / Wavelength: 0.9795 Å |
Detector | Type: DECTRIS EIGER2 XE 16M / Detector: PIXEL / Date: May 21, 2018 |
Radiation | Monochromator: Double crystal 28.290m / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.9795 Å / Relative weight: 1 |
Reflection | Resolution: 2.949→65.19 Å / Num. obs: 23039 / % possible obs: 100 % / Redundancy: 6.5 % / Biso Wilson estimate: 56.85 Å2 / CC1/2: 0.987 / Rpim(I) all: 0.108 / Net I/σ(I): 5.9 |
Reflection shell | Resolution: 2.949→3.13 Å / Redundancy: 6.7 % / Mean I/σ(I) obs: 1.7 / Num. unique obs: 3661 / CC1/2: 0.439 / Rpim(I) all: 0.415 / % possible all: 99.9 |
-Processing
Software |
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Refinement | Method to determine structure: MOLECULAR REPLACEMENT Starting model: 1wdk-chainA Resolution: 2.95→53.53 Å / SU ML: 0.4246 / Cross valid method: FREE R-VALUE / σ(F): 1.43 / Phase error: 29.6929 Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
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Solvent computation | Shrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 62.76 Å2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 2.95→53.53 Å
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Refine LS restraints |
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LS refinement shell |
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Refinement TLS params. | Method: refined / Refine-ID: X-RAY DIFFRACTION
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Refinement TLS group |
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